Odds Converter
Instantly convert between decimal (European), fractional (UK), and American (moneyline) odds — plus the implied probability. Edit any field and the other three update automatically.
Standard format in Europe and Australia
Traditional UK format — profit relative to stake
Positive = profit on $100 stake. Negative = stake needed to win $100.
The win probability the odds imply (before any vig)
Decimal
2.50
Fractional
3/2
American
+150
Implied
40.00%
No-vig / Overround check
Enter the decimal odds for each outcome in a match (2-way or 3-way) to see how much bookmaker margin (vig) is built in.
Let Lytic find the odds that are too high
Lytic checks 40+ bookmakers and posts bets priced above the fair odds before kickoff. Every pick is graded against the closing price in public.
How it works
Quick reference table
| Decimal | Fractional | American | Implied prob |
|---|---|---|---|
| 1.50 | 1/2 | -200 | 66.7% |
| 2.00 | 1/1(Evs) | +100 | 50.0% |
| 2.50 | 3/2 | +150 | 40.0% |
| 3.00 | 2/1 | +200 | 33.3% |
| 4.00 | 3/1 | +300 | 25.0% |
| 5.00 | 4/1 | +400 | 20.0% |
| 6.00 | 5/1 | +500 | 16.7% |
| 10.00 | 9/1 | +900 | 10.0% |
| 1.91 | 10/11 | -110 | 52.4% |
| 1.80 | 4/5 | -125 | 55.6% |
Conversion formulas
Decimal → American
if decimal ≥ 2.0:
American = (decimal − 1) × 100
if decimal < 2.0:
American = −100 / (decimal − 1)
Example: 2.50 → +150 | 1.80 → −125
American → Decimal
if American > 0:
Decimal = American / 100 + 1
if American < 0:
Decimal = 100 / |American| + 1
Example: +200 → 3.00 | −200 → 1.50
Decimal Fractional
Fractional = (decimal − 1) simplified
Decimal = numerator / denominator + 1
Example: 3.00 → 2/1 | 3/2 → 2.50
Decimal Implied probability
Implied % = (1 / decimal) × 100
Decimal = 100 / implied %
Example: 2.50 → 40% | 25% → 4.00
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